{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950712,-0.310074,0.000000,0.000000,0.173321,-0.531416,0.829190,0.000000,-0.256569,0.786661,0.561548,0.000000,-1638162.714049,5022736.872153,3561416.453871,1],    "boundingVolume": {    "region": [1.886019,0.596206,1.886116,0.596305,0.000000,8.773119]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/1/2_1427501.b3dm"}}}